Substances found in large quantities include epoxy resins, fiberglass, PCBs, PVC (poly vinyl chlorides), thermosetting plastics, lead, tin, copper, silicon, beryllium, carbon, iron and aluminium. Elements found in small amounts include cadmium, mercury and thallium. Elements found in trace amounts include americium, antimony, arsenic, barium, bismuth, boron, cobalt, europium, gallium, germanium, gold, indium, lithium, manganese, nickel, niobium, palladium, platinum, rhodium, ruthenium, selenium, silver, tantalum, terbium, thorium, titanium, vanadium, and yttrium. Almost all electronics contain lead and tin (as solder) and copper (as wire and printed circuit board tracks), through the use of lead-free solder is now spreading rapidly. 

Any waste which is generated during the diagnosis, treatment or immunization of human beings or animals or in research activities pertaining thereto or in the production or testing of biologicals is called biomedical wastes.

Malaria is caused by a parasite called plasmodium vivax through the agent anopheles mosquito. 

Electronic waste or e-waste describes discarded electrical or electronic devices. Used electronics which are destined for reuse, resale, salvage, recycling or disposal are also considered e-waste. E-waste recycling spews dioxins into the air. E-waste recycling using uncontrolled processes is a major source of dioxin-related compounds. Air around e-waste recycling areas in Guiyu, China, contains the highest levels of dioxins ever recorded. When computers, televisions, music systems, and other electronic products reach the ends of their lives, they often end up in China or other developing countries as e-waste. Such waste is a serious environmental threat in these parts of the world because of the poorly regulated conditions under which the waste is dismantled. E-waste affects brain, lungs and all over the body. There is also evidence of cell membrane lesion, cause DNA single-strand breaks. DNA breaks can increase the likelihood of developing cancer. DNA damages are a special problem in non-dividing or slowly dividing cells, where unrepaired damages will tend to accumulate over time. On the other hand, in rapidly dividing cells, unrepaired DNA damages that do not kill the cell by blocking replication will tend to cause replication errors and thus mutation.

Biomedical waste should be collected in containers that are leak-proof and sufficiently strong to prevent breakage during handling. Containers of biomedical waste are marked with a biohazard symbol. The container, marking and labels are often red. Discarded sharps are usually collected in specialized boxes, often called needle boxes. 

Biomedical waste is waste that is either putrescible or potentially infectious. Biomedical waste may also include waste associated with the generation of biomedical waste that visually appears to be of medical or laboratory origin (e.g., packaging, unused bandages, infusion kits, etc.), as well research laboratory waste containing biomolecules or organisms that are restricted from environmental release. 

Electronic waste or e-waste describes discarded electrical or electronic devices. Used electronics which are destined for reuse, resale, salvage, recycling or disposal are also considered e-waste. Informal processing of electronic waste in developing countries may cause serious health and pollution problems, as these countries have limited regulatory oversight of e-waste processing. 

Biomedical waste may be solid or liquid. Examples of infectious waste include discarded blood, unwanted microbiological cultures and stocks, identifiable body parts, other human or animal tissue, used bandages and dressings, discarded gloves, other medical supplies that may have been in contact with blood and body fluids and laboratory waste that exhibits the characteristics described above. 

The waste that is generated from electronic gadgets is called as e-waste. Several hazardous material/ chemical are categorized as e-waste like beryllium, lead, Cd etc.

Biomedical wastes, industrial wastes, domestic wastes etc., are burnt in and incinerator at high temperature. Incineration is an industrial combustion process designed to reduce unwanted material to simple solid and gaseous residues.

• (p)e-waste - (iv)Irreparable waste - Irreparable computers and other electronic goods are known as electronic wastes (e-waste). Electronic waste or e-waste describes discarded electrical or electronic devices. When electronic waste is thrown away in landfills their toxic materials seep into groundwater, affecting both land and sea animals.
• (q)Biodegradable waste - (iii)Green waste -Green waste is an organic waste that can be composted. As green waste can be degraded by natural processes into some usable forms they are called a biodegradable waste.
• (r)Inert waste - (ii)Dirt -Inert waste is waste which is neither chemically nor biologically reactive and will not decompose. Examples of this are sand and concrete. Inert waste is also called as dirt.
• (s)Composite waste -(i)Waste clothing - Composite is a material made of 2 or more materials. Hence the overall properties are dependent on the type of reinforcement and matrix. Once the material has done its part and it no longer used it is needed to be replaced.

Biomedical waste includes infectious waste, which is waste that is contaminated by body fluids or radioactive chemicals such as chemotherapy drugs. The waste may include needles, disposable tools and other materials. Improper management of biomedical waste can result in contamination of air, soil and water with pathogens and toxic chemicals which may affect all forms of life. Inadequate waste management may lead to transmission of diseases like typhoid, cholera, etc. Infectious agents such as faeces, vomit, saliva, secretions, blood can cause serious health risks on individuals by affecting organs or systems like gastrointestinal, respiratory, eye, skin and cause Anthrax, Meningitis, AIDS, Haemorrhagic Fever, Hepatitis A, B, C, Influenza etc.

Audiovisual components, televisions, VCRs, stereo equipment, mobile phones, other handheld devices and computer components contain valuable elements and substances suitable for reclamation, including lead, copper and gold. One of the major challenges is recycling the printed circuit boards from the electronic wastes. The circuit boards contain such precious metals as gold, silver, platinum, etc., and such base metals as copper, iron, aluminium, etc. 

Biomedical waste may be infectious waste include discarded blood, sharps, unwanted microbiological cultures and stocks, body parts after amputation. The wastes may also include bandages and dressings, discarded gloves, other medical supplies that may have been in contact with blood and body fluids, and laboratory waste. This waste is highly infectious. The method used for the disposal of biomedical waste is incineration. Incinerators are operated at very high temperatures. This temperature kills and destroys the microorganisms and pathogens. Autoclaving is done for reusable products like gloves. 

Solids waste that are generated must be segregated as dry waste and wet waste. This would help in better treatment and disposal of waste. Paper is wet waste whereas resin plastic and rubber are dry waste.

The waste that is generated from hospitals and clinics is classified as biomedical waste. The waste includes bandages, syringes, gloves, waste cotton, saline etc. in this category.

The time taken for some solid waste to decompose is very long, 100-400 years for old cloths, wool etc. 

Definition of solid waste. There is an ever increasing  generation of solid waste by the society due to changing life styles. approach if convenience and use and throw habit. 

The waste that is generated from electronic gadgets is called as e-waste. Several hazardous material/chemical are categorized as e-waste like beryllium, lead, Cd, etc. These gets deposited in soil for long period of time causing soil pollution.

Collection and transportation of biomedical waste is done in a scientific way. They disinfect transportation vehicle regularly. The waste management is mechanisms are done through different franchises.